This may sound a silly question, but if you have your GVP and it works fine in your A500, why do you want to run it on your A1000? Seriously, I wouldn't do any case hacks or the like, but I'd just accept that it has the ACA stuck on the side facing the wrong way and leave it at that! I'm quite the purist though so you might not want to listen to me, but a case hack like the one you linked to is irreversible and I am certainly not in favour. Don't do it!
P.S. If you 1010 is dead and beyond repair then I suppose that would be more acceptable to me.
